Setting timers of a router

Abstract

A method and apparatus and a program storage device, readable by a machine, tangibly embodying a program of instructions executable by the machine performs a method including: receiving an update message at a router, the update message including a timer value from at least one other router according to a routing protocol; extracting the timer value from the update message received from the at least one other router; and resetting the timer value in response to a difference between the extracted timer value of the at least one other router and the set timer value.

1 . A router comprising: 
 a message extracting unit adapted to extract a timer value from an update message including the timer value transmitted from at least one other router over a network according to a routing protocol; and    a timer setting unit adapted to reset the timer value in response to a difference between the timer value extracted from the message extracting unit and a timer value preset in the router.    
   
   
       2 . The router of  claim 1 , wherein the timer value comprises at least one of an update timer value, a timeout timer value, and a garbage collection timer value.  
   
   
       3 . The router of  claim 1 , wherein the routing protocol comprises at least one of a Routing Information Protocol (RIP), and a Routing Information Protocol next Generation for Ipv6 (RIPng).  
   
   
       4 . The router of  claim 1 , wherein the update message comprises at least one of information on the timer value set for the router and information indicating the timer value.  
   
   
       5 . The router of  claim 1 , further comprising a message generating unit adapted to generate the update message using the set timer value and a random offset value based on a set routing protocol.  
   
   
       6 . The router of  claim 1 , wherein the timer setting unit is adapted to reset the timer value of the router to a comparison value adding a maximum offset value to the timer value of another router, upon the comparison value being greater than the preset timer value.  
   
   
       7 . The router of  claim 1 , wherein the timer setting unit is adapted to reset the timer value of the router to a comparison value adding the timer value transmitted from another router to a random offset value when the router is initially driven, upon the comparison value being smaller than the preset timer value.  
   
   
       8 . The router of  claim 1 , wherein the timer setting unit is adapted to reset the timer value of the router to a comparison value adding the timer value transmitted from another router to a random offset value upon the router being connected to another router through the network, and upon the comparison value being smaller than the preset timer value.  
   
   
       9 . A router comprising: 
 a message generating unit adapted to generate an update message including an update timer value set according to a routing protocol;    a message processing unit adapted to extract the update timer value including the update message transmitted from another router; and    a timer setting unit adapted to reset the timeout timer value of the router in response to a difference between the update timer value of the another router extracted from the message processing unit and the timeout timer value set for the router.    
   
   
       10 . The router of  claim 9 , wherein the message generating unit is adapted to generate the update message using the set update timer value and a random offset value according to the set routing protocol.  
   
   
       11 . The router of  claim 9 , wherein the timer setting unit is adapted to reset the timer value of the router to a comparison value adding a maximum offset value to the update timer value of the another router provided by the message processing unit, upon the comparison value being greater than the timeout timer value set for the router.  
   
   
       12 . A method comprising: 
 receiving an update message at a router, the update message including a timer value from at least one other router according to a routing protocol;    extracting the timer value from the update message received from the at least one other router; and    resetting the timer value in response to a difference between the extracted timer value of the at least one other router and the set timer value.    
   
   
       13 . The method of  claim 12 , wherein the update message is generated in response to the set timer value and a random offset value according to the routing protocol.  
   
   
       14 . The method of  claim 12 , wherein resetting the timer value comprises: 
 comparing a comparison value adding a maximum offset value to the extracted timer value of the at least one other router with the timer value set for the router; and    resetting the timer value of the router to the comparison value upon the comparison value being greater than the timer value.    
   
   
       15 . The method of  claim 12 , wherein the timer value of the router is reset to the comparison value when the router was initially driven upon a comparison value adding the timer value transmitted from the other router to a random offset value being smaller than the preset timer value.  
   
   
       16 . The method of  claim 12 , wherein the timer value of the router is reset to the comparison value when the router was connected to one router through a network upon a comparison value adding the timer value transmitted from the at least one other router to a random offset value being smaller than the preset timer value.  
   
   
       17 . The method of  claim 12 , wherein the timer value comprises at least one of an update timer value, a timeout timer value, and a garbage collection timer value.  
   
   
       18 . The method of  claim 12 , wherein the update message comprises at least one of information of the timer value set for the router and information indicating the timer value.